Sash-lock.



:Patented Dee. 30, |902.

No. 7|7,424. r

H. J. LOMB.

SASH L CK. zApplicatiqn n e ily 2 6, 1002.)

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UNITED STATES PATENT OFFICE. t

HARRYA JOHN LOMB, OF ALLEGI-IENY, PENNSYLVANIA.

. SASH-LOCK.

SPECIFICATION forming part of Letters Patent No. 717,424, dated December 30, 1902. Application filed July 26, 1902. Serial No. 117,100. (No model.)

To a/ZZ whonc it may concern:

Be it known thatl, HARRY JOHN LOMB, a citizen of the United States, residing at Allegheny, in the countyuof Allegheny and State of Pennsylvania, have invented certain new" and useful Improvements in Sash-Locks, of which the following is a specification.

This invention relates to a sash-lock; and the primary object ofthe same is to provide simple and eective means whereby coperating sash are locked to each other or released in one operation, and thus overcome the objections and extra mechanism required in devices of this class which iirst lock one sash and then the other.-

A further object of the invention is to conveniently locate the controlling devices for the lock so that they may be readily reached` and operated when desired and also to insure a positive securernent of the sash when the` In the drawings, Figurel is a front eleva! tion of portions of window-sash, showing a part of the frame in section and embodying the features of the invention. Fig. 2 is a partial section and elevation of the sash, the upper rail of the lower sash being shown in section. Fig. 3 is a transverse vertical section through the meeting-rails of the sash and the lock devices, a part of the coperating elements of the latter being shown in elevation. Fig. 4 is a detail section of a portion of a sash rail and frame, showing a rack-andpinion mechanism forming part of the invention.

Similar numerals of reference are employed to indicate corresponding partsin the several views.

The numeral 1 designates a lower sash, 2 an upper sash, and 3 the usual frame in which the sash are mounted and provided with beads, as usual, for holding the said sash in proper spaced relation and to guide the same in their vertical movements. To the outer edge of one bead 4, at one side of the frame at a point above the upperrail of the lower sash when the latter is lowered, a rack 5 is secured and extends from said point upwardly to the top of the frame, the teeth of this rack being projected inwardly. On the side stile dof the upper sash, at a point opposite the location of the rack 5, a second similar rack 7 is secured and also has its teethprojected inwardly. The teeth of the racks 5 and 7 extend inwardly only far enough for practical engagement therewith of movableA devices, which will be hereinafter referred to, and avoid the formation of open spaces between the side rails of the sash when moving over each other, or, in other words, to avoid departure from the ordinary Ysash arrangement.

A bore 8 is constructed in the upper or Ineeting rail 9 of the lower sash 1 and extends longitudinally through the upper part of said rail, and intersecting this bore adjacent to opposite ends of the rail 9 and at the center of the latter are-slots 10, which extend completely through the said rail in a transverse direction. In the bore 8 ashaft 11 is rotatably mounted, and thereon are secured outer pinions 12 and 13 and a central pinion 14, the said pinion rotating in the slots 10. The teeth of these pinions operatively project beyond the outer and inner faces of the rail 9, and the pinions 12 and 13 are held in continual mesh respectively with the racks 5 and 7, so that when the lsash l and 2 are raised and lowered the shaft 11 will be correspondingly rotated.

On` the inner face of the rail 9, approximately at the center, a bracket 15is secured and has an upper horizontal arm"16, with a rearwardly -projected vangular terminal 17 The arm 16 and its terminal stand inwardly from the inner face of the rail 9, and on the angular terminal 17 thereof is rotatably mounted a disk-head 18, formed with a series of radial sockets 19, extending completely therearound. Secured to the rear side ofthe disk-head 18 is a pinion 20,' the said disk-.head and pinion unitedly rotating on the terminal 17. The center of the pinion 20 is far enough to one side of the pinion 14 to permit the teeth of the latter to engage the teeth of the said pinion 20, as clearly shown by Figs. 1 and 3,

and hence when the disk-head 18 is free to rotate the upward or downward movement of either sash will actuate the shaft 8 and pinion 14 and rotate the pinion 2O and head 18. It will thus be seen that if the head 18 and pinion 20 are held against rotation it will be impossible to move either sash, and to lock the said head 18 and pinion 2O against movement a vertically-disposed spring-actuated latch-bolt 21 is arranged below the head 18 in a guide-casing 22, secured to the inner face of the rail 9. The upper end 23 of the latch-bolt is reduced to enter the ,sockets 19 of the head 18, and the lower end of said bolt is provided with an eye 24, to which is attached the upper end of a pull-cord 25, whereby the latch-bolt may be disengaged from the disk-head 18 to permit the sash 1 and 2 to be raised or lowered. When the latch-bolt is released, the spring engaging the same forces the reduced upper end 23 thereof into the nearest or coinciding socket 19 of the diskhead, and the latter and the pinion 2O will be prevented from rotating', and thus also lock the shaft 8 against movement.

By having the rack 5 secured to a part of the window-frame 3 and the rack '7 attached to a part of the upper sash movement of the two sashes will be permitted and the one can be locked to the frame and the upper sash to the lower sash. By having the pull-cord 25 depend to the lower rail of the lower sash the operator may conveniently disengage the latch-bolt from the disk-head and hold said bolt in disengaged position lwhile raising or lowering the lower sash or lowering and elevating the upper sash. The improved lock also prevents movement of the sash from the exterior of the window in view of the securement of one sash to the other, and the parts of the lock organiza-tion may be varied in proportions and dimensions to suit diiferent applications.

Having thus described the invention, what is claimed as new isk 1. In a sash, the combination of a windowframe,sashes movably mounted therein,racks secured respectively to one side of the frame and the upper sash, pinions carried by the upper rail of the lower sash and held in continual engagement with the said racks, and means for controlling the rotation of the said pinions and locking the sashes against movement.

2. In a sash-lock, the combination of a frame having a rack secured to one side thereof, sashes movably mounted in the frame, the upper sash having a rack on one side thereof, a shaft rotatably mounted in the upper portion of the lower sash and having pinions thereon engaging the said racks and also provided with an intermediate pinion, a rotatable disk-head having radial sockets carrying a pinion meshing with the said intermediate pinion, and a spring-actuated latch-bolt to cooperate with the sockets in the disk-head to hold the latter against rotation.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY JOHN LOMB. 

